Dinitrogen pentoxide chemistry

C. C. Addison and N. Logan, in The Chemistry of Dinitrogen Pentoxide Developments in Inorganic Nitrogen Chemistry, Ed. C. B. Coburn, Elsevier, Amsterdam, Chapter 2 (1973). 

The chemistry of cyclopentafurazans (cyclopen-ta-1,2,5-oxadiazoles) and furazans fused to five-membered heterocycles with one to four heteroatoms has been reviewed (95JHC371). Treatment of 3-amino-4-nitro-l,2,5-oxadiazole with dinitrogen pentoxide yields dinitro-1,2,5-oxadiazole 89 (95MC102). The latter reacts normally with benzenethiol to give the sulfide 90,... 

Nitrogen trioxide (NO3) is also called nitrate radical, and is formed by the reaction of O3 + NO2. Dinitrogen pentoxide (N2O5) is then formed from the NO3 and NO2 in the equilibrium reaction of NO3 + NO2 NiOs. The NO3 and N2O5 are important intermediates in nighttime chemistry, and their daytime concentrations are very low since NO3 absorbs solar radiation strongly and is easily photolyzed. 

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